New South Wales (abbreviated as NSW), Australia's most populous state, is located in the south-east of the country, north of Victoria, south of Queensland, east of South Australia and encompasses the whole of the Australian Capital Territory. The colony of New South Wales was founded in 1788 and originally comprised much of the Australian mainland, as well as Van Diemen's Land, Lord Howe Island and Norfolk Island in addition to the area currently referred to as the state of New South Wales, which was formed during Federation in 1901.

When Britain annexed New Zealand in 1840, it briefly became a part of New South Wales. During the 19th century large areas were successively separated to form the British colonies of Tasmania (established as a separate colony named Van Diemen's Land in 1825), South Australia (1836), Victoria (1851) and Queensland (1859).

Inhabitants of New South Wales are referred to as New South Welsh or New South Welshmen. New South Wales's largest city and capital is Sydney.

Executive authority is vested in the Governor of New South Wales, who represents and is appointed by Queen Elizabeth II. The current Governor is Her Excellency Professor Marie Bashir (Lady Shehadie). The Governor commissions as Premier the leader of the parliamentary political party that can command a simple majority of votes in the Legislative Assembly. The Premier then recommends the appointment of other Members of the two Houses to the Ministry, under the principle of responsible or Westminster government. It should be noted, however, that as in other Westminster systems, there is no constitutional requirement in NSW for the Government to be formed from the Parliament — merely convention. The Premier is Kristina Keneally of the Australian Labor Party.

Constitution
The form of the Government of New South Wales is prescribed in its Constitution, which dates from 1856, although it has been amended many times since then. Since 1901 New South Wales has been a state of the Commonwealth of Australia, and the Australian Constitution regulates its relationship with the Commonwealth.

Under the Australian Constitution, New South Wales ceded certain legislative and judicial powers to the Commonwealth, but retained independence in all other areas. The New South Wales Constitution says: "The Legislature shall, subject to the provisions of the Commonwealth of Australia Constitution Act, have power to make laws for the peace, welfare, and good government of New South Wales in all cases whatsoever."

 Parliament
The State Parliament is composed of the Sovereign and two houses: the Legislative Assembly (lower house), and the Legislative Council (upper house). Elections are held every four years on the fourth Saturday of March, the most recent being on 24 March 2007. At each election one member is elected to the Legislative Assembly from each of 93 electoral districts and half of the 42 members of the Legislative Council are elected by a statewide electorate.

 Emergency services
New South Wales is policed by the New South Wales Police Force, a statutory authority. Established in 1862, the NSW Police Force investigates Summary and Indictable offences throughout the State of New South Wales. The state has two fire services: the volunteer based New South Wales Rural Fire Service, which is responsible for the majority of the state, and the New South Wales Fire Brigades, a government agency responsible for protecting urban areas. There is some overlap due to suburbanisation. Ambulance services are provided through the Ambulance Service of New South Wales. Rescue services (i.e. vertical, road crash, confinement) are a joint effort by all emergency services, with Ambulance Rescue, Police Rescue Squad and Fire Rescue Units contributing. Volunteer rescue organisations include the Australian Volunteer Coast Guard, State Emergency Service (SES), Surf Life Saving New South Wales and Volunteer Rescue Association (VRA).

New South Wales is bordered on the north by Queensland, on the west by South Australia, on the south by Victoria and on the east by the Tasman Sea. The Australian Capital Territory and the Jervis Bay Territory are Federal enclaves of New South Wales. The state can be divided geographically into four areas. New South Wales' three largest cities, Sydney, Newcastle and Wollongong, lie near the centre of a narrow coastal strip extending from cool temperate areas on the far south coast to subtropical areas near the Queensland border.

The Illawarra region is centred on the city of Wollongong, with the Shoalhaven, Eurobodalla and the Sapphire Coast to the south. The Central Coast lies between Sydney and Newcastle, with the North Coast and Northern Rivers regions reaching northwards to the Queensland border. Tourism is important to the economies of coastal towns such as Coffs Harbour, Lismore, Nowra and Port Macquarie, but the region also produces seafood, beef, dairy, fruit, sugar cane and timber.

The Great Dividing Range extends from Victoria in the south through New South Wales to Queensland, parallel to the narrow coastal plain. This area includes the Snowy Mountains, the Northern, Central and Southern Tablelands, the Southern Highlands and the South West Slopes. Whilst not particularly steep, many peaks of the range rise above 1,000 metres (3,281 ft), with the highest Mount Kosciuszko at 2,229 m (7,313 ft). Skiing in Australia began in this region at Kiandra around 1861. The relatively short ski season underwrites the tourist industry in the Snowy Mountains. Agriculture, particularly the wool industry, is important throughout the highlands. Major centres include Armidale, Bathurst, Bowral, Goulburn, Inverell, Orange, Queanbeyan and Tamworth.

There are numerous forests in New South Wales, with such tree species as Red Gum Eucalyptus and Crow Ash (Flindersia australis), being represented. Forest floors have a diverse set of understory shrubs and fungi. One of the widespread fungi is Witch's Butter (Tremella mesenterica).

The western slopes and plains fill a significant portion of the state's area and have a much sparser population than areas nearer the coast. Agriculture is central to the economy of the western slopes, particularly the Riverina region and Murrumbidgee Irrigation Area in the state's south-west. Regional cities such as Albury, Dubbo, Griffith and Wagga Wagga and towns such as Deniliquin, Leeton and Parkes exist primarily to service these agricultural regions. The western slopes descend slowly to the western plains that comprise almost two-thirds of the state and are largely arid or semi-arid. The mining town of Broken Hill is the largest centre in this area.

One possible definition of the centre for New South Wales is located 33 kilometres (21 mi) west-north-west of Tottenham.

Most of New South Wales has an arid or semi arid climate. However, most of the eastern portion has a temperate, wet climate. The Snowy Mountains region in the south-east falls in the alpine climate/highland climate zone, with cool to cold weather all year around and snowfalls in the winter.

The highest maximum temperature recorded was 49.7 °C (121 °F) at Menindee in the state's west on 10 January 1939. The lowest minimum temperature was −23 °C (−9 °F) at Charlotte Pass in the Snowy Mountains on 29 June 1994. This is also the lowest temperature recorded in the whole of Australia excluding the Antarctic Territory.

Since the 1970s, New South Wales has undergone an increasingly rapid economic and social transformation. Old industries such as steel and shipbuilding have largely disappeared; although agriculture remains important, its share of the state's income is smaller than ever before.

New industries such as information technology and financial services are largely centred in Sydney and have risen to take their place, with many companies having their Australian headquarters in Sydney CBD. In addition, the Macquarie Park area of Sydney has attracted the Australian headquarters of many information technology firms.

Coal and related products are the state's biggest export. Its value to the state's economy is over AU $5 billion, accounting for about 19% of all exports from NSW.

Tourism has also become important, with Sydney as its centre, also stimulating growth on the North Coast, around Coffs Harbour and Byron Bay. Tourism is worth over $23 billion to the New South Wales economy and employs over 8% of the workforce. In 2007, then-Premier of New South Wales Morris Iemma established Events New South Wales to "market Sydney and NSW as a leading global events destination".

New South Wales had a Gross State Product in 2006 (equivalent to Gross Domestic Product) of $310 billion which equalled $45,584 per capita.

On 9 October 2007, NSW announced plans to build a 1,000 MW (megawatt) bank of wind powered turbines. The output of these is anticipated to be able to power up to 400,000 homes. The cost of this project will be $1.8 billion for 500 turbines. On 28 August 2008, the New South Wales cabinet voted to privatise electricity retail, causing 1,500 electrical workers to strike after a large anti-privatisation campaign.

The NSW business community is represented by the NSW Business Chamber which has 30,000 members.

New South Wales has more than 780 national parks and reserves covering more than 8% of the state. These parks range from rainforests, spectacular waterfalls, rugged bush to marine wonderlands and outback deserts, including World Heritage areas.

The Royal National Park on the southern outskirts of Sydney became Australia's first National Park when proclaimed on 26 April 1879. Originally named The National Park until 1955, this park was the second National Park to be established in the world after Yellowstone National Park in the U.S. Kosciuszko National Park is the largest park in state encompassing New South Wales' alpine region.

The National Parks Association was formed in 1957 to create a system of national parks all over New South Wales which lead to the formation of the National Parks and Wildlife Service in 1967. This government agency is responsible for developing and maintaining the parks and reserve system, and conserving natural and cultural heritage, in the state of New South Wales. These parks preserve special habitats, plants and wildlife, such as the Wollemi National Park where the Wollemi Pine grows and areas sacred to Australian Aboriginals such as Mutawintji National Park in western New South Wales.

As Australia's most populous state, New South Wales is home to a number of cultural institutions of importance to the nation. In music, New South Wales is home to the Sydney Symphony Orchestra, Australia's busiest and largest orchestra. Australia's largest opera company, Opera Australia, is headquartered in Sydney. Both of these organisations perform a subscription series at the Sydney Opera House. Other major musical bodies include the Australian Chamber Orchestra. Sydney is host to the Australian Ballet for its Sydney season (the ballet is headquartered in Melbourne). Apart from the Sydney Opera House, major musical performance venues include the City Recital Hall and the Sydney Town Hall.

New South Wales is home to a number of major art galleries. The Art Gallery of New South Wales (AGNSW), houses a significant collection of Australian art, while the Museum of Contemporary Art, Sydney focuses on contemporary art.

Major museums include the natural history-focussed Australian Museum, the technology and arts-and-crafts focussed Powerhouse Museum, and the history-focussed Museum of Sydney. Other museums include the Sydney Jewish Museum.

Sydney is home to five Arts teaching organisations which have all produced world famous students: The National Art School, The College of Fine Arts, the National Institute of Dramatic Art (NIDA), the Australian School of Film, Radio and Television and the Conservatorium of Music (now part of the University of Sydney).

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